/Engine/Plugins/Importers/USDImporter/Source/USDSchemas/Public/USDInfoCache.h
The inverse of the function above: Provide it with the path to a Material prim and it will return the set of paths to all Shader prims that need to be read to translate that Material prim into material assets
[TSet](API\Runtime\Core\Containers\TSet)< [UE::FSdfPath](API\Plugins\UnrealUSDWrapper\UsdWrappers\FSdfPath) > GetAuxiliaryPrims ( const [UE::FSdfPath](API\Plugins\UnrealUSDWrapper\UsdWrappers\FSdfPath) & MainPrimPath ) const